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n the Pacific Ocean there are more than 11,000 seamounts (57% of the global total) and 41 000 knolls, and many more might exist in uncharted waters. Many seamounts are within the Exclusive Economic Zone (EEZs) of Pacific Island states.
Bathymetric map of the Pacific showing the location of seamounts.

Formation of Fe-Mn crustsA wide array of metals and elements dissolved in ocean water are adsorbed (meaning to adhere to a surface) in large quantities onto the manganese
and iron oxides. The main source of nearly all metals dissolved in seawa...

By GRID-Arendal

Gifford Guyot, Tasman Sea, southwest Pacific OceanThis multibeam sonar image was collected in 2007 aboard the RV Tangaroa
during a Geoscience Australia marine survey. The flat top of the guyot is about 250 m deep.